Eaton NRX Instruction Manual page 61

Figure 62. Step 1.
Shown without breaker for clarity
Step 2: (Drawout breakers) Once both latches are released
the inner cradle can be compressed until the tool slot is
visible. Insert a screwdriver vertically into the slot to hold
the inner cradle in place and improve arc chute access. On
the RF frame, repeat Steps 1 and 2 on the second contact
assembly.
Figure 63. Step 2.
Tool slot
Step 3: Using a Phillips screwdriver, remove the four top-
inserted mounting screws from each arc chute.
Figure 64. Step 3.
Series NRX with PXR - type RF low voltage power (air) circuit breakers instruction manual MN013002ENH03 September 2016 www.eaton.com
Section 7: Inspection and maintenance
Step 4: Lift the arc chute up and out of the arc chamber.
Figure 65. Step 4.
Step 5: Follow the same procedure to remove the remaining
two arc chutes.
Step 6: Inspect the arc chutes for obvious damage and turn
them over to inspect the inside for obvious damage or dirt
accumulation. Series NRX arc chutes cannot be replaced.
If damage or dirt accumulation is observed, contact Eaton
for additional information.
Figure 66. Step 6.
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